PITTSBURGH -- The Astros will be carrying one left-hander in the bullpen for the next two weeks after reliever Fernando Abad was placed on the disabled list Tuesday with shoulder tendinitis. The move is retroactive to July 2.

Abad has struggled in two stints with the Astros this year, allowing four earned runs in one inning of work Saturday against the Red Sox. He has a 7.32 ERA in 29 games this year for the Astros. Fernando Rodriguez was called up from Triple-A Oklahoma City.

"He came in over the weekend complaining of some tightness in his elbow and shoulder, and the elbow resolved itself in short order," Astros general manager Ed Wade said. "He was very tentative throwing when he went out there in the afternoon today, and [head athletic trainer] Nate [Lucero] felt it would be a couple of days. It was the best thing to do, to put him on the DL and go from there."

Wade said he didn't expect Abad to be seen by any doctors. The move means Sergio Escalona is the lone left-hander in the bullpen for the time being.

Reliever Rodriguez recalled from Triple-A

PITTSBURGH -- When reliever Fernando Rodriguez was optioned to Triple-A Oklahoma City late last month despite pitching well, the Astros promised he would be called up when his mandated 10 days in the Minor Leagues were over.

The Astros kept to their word, with Rodriguez rejoining the team Tuesday. To make room for him on the roster, left-hander Fernando Abad was placed on the 15-day disabled list with shoulder tendinitis.

"They said, 'In 10 days, we're going to have you back and just don't get hurt,'" Rodriguez said. "I'm glad it was only 10 days."

Rodriguez appeared in 13 games with the Astros from May 28-June 24 and posted a 2.87 ERA in 15 2/3 innings. He struck out 22 batters and walked only five, averaging 12.6 strikeouts per nine innings. He held opposing batters to a .228 average.

Rodriguez got caught in a numbers game and was optioned back to Triple-A on June 24, when the Astros decided they needed to temporarily carry three catchers because of nagging injuries to J.R. Towles. He had to spend 10 days in the Minor Leagues before being recalled.

In 16 appearances this year at Oklahoma City, he was 2-3 with a 1.50 ERA and has struck out 33 batters in 24 innings. Rodriguez, 26, was signed to a Minor League contract in November after spending all of last season at Triple-A Salt Lake of the Angels system.

Bourgeois will need to go on rehab assignment

PITTSBURGH -- Jason Bourgeois, who's been on the disabled list since May 29 with a right quad strain, would be eligible to be activated after the All-Star break, but manager Brad Mills suspects Bourgeois will be out longer because he'll need a Minor League rehab assignment.

Bourgeois, a backup outfielder, has been a sparkplug for the team this year, but he's been unable to stay healthy. He missed 25 games earlier in the season because he was on the DL with a strained left oblique. He's hitting .353, with 17 stolen bases in 102 at-bats.

"This will be his second time coming back from an injury, and we really kind of need to run him through the course a little bit of playing some games to see if he's healthy," Mills said. "That would only make sense. He needs to find out for himself if he's OK."

Mills said Bourgeois is feeling better.

"[Monday] was a real good day for him, and he felt good," he said.

Astros sign pair of international shortstops

PITTSBURGH -- The Astros made their first significant signing of the international signing period Tuesday by inking 16-year-old shortstop Luis Reynoso of the Dominican Republic for $700,000. They have also reached an agreement with Venezuelan shortstop Arturo Michelena, who's reportedly going to fetch $220,000. He will sign Wednesday.

Reynoso, at 6-foot and 170 pounds, is a right-handed hitter who was named the Most Valuable Player of the DPL All-Star Game in May and projects to be an offensive infielder.

"Reynoso is a guy that we really like," Astros special assistant to the general manager, Latin American operations Felix Francisco said. "We really felt strongly he's the best shortstop in Latin America that is going to stay at shortstop. Some of the other guys we really liked, we felt like they would move to third or second in the future. Reynoso can hit, and he's the best runner in the whole group."

The Astros last year made a huge splash in the international market, signing then-16-year-old outfielder Ariel Ovando to a club-record bonus of $2.6 million. Ovando is currently playing for the Astros' rookie-league club in Greeneville, Tenn.